Golf Hall of Famer Jack Nicklaus is 85. Opera singer Plácido Domingo is 84. Singer Billy Ocean is 75. Artist Jeff Koons is 70. Filmmaker Robby Benson is 69. Actor Geena Davis is 69. Basketball Hall of Famer Hakeem Olajuwon is 62. Musician Cat Power is 53. Singer Emma Bunton is 49. Actor Luke Grimes is 41.